At the junction where the two materials meet, electrons pair up with holes to form an area depleted of charge that prevents current from flowing.
两种材料的接合处电子与电穴配对形成一个没有电荷的区域，阻止电流通过。
2
When a current is applied across the sandwich, the electrons and holes team up at the junction of the two materials and release energy in the form of light.
电流流过夹层，电子和空穴在两种材料接口处共同发挥作用，释放光能。
3
The electrical current transports the atom from one end of the wire to the other, so the wire on one end can have holes or at the other end can be broken.